650
NOUS41 KWBC 271755
PNSWSH
SERVICE CHANGE NOTICE 26-20
NATIONAL WEATHER SERVICE HEADQUARTERS SILVER SPRING MD
1255 PM EST FRI FEB 27 2026
TO: SUBSCRIBERS
-NOAA WEATHER WIRE SERVICE
-EMERGENCY MANAGERS WEATHER INFORMATION NETWORK
-NOAAPORT
OTHER NWS PARTNERS AND EMPLOYEES
FROM: TERRANCE J. CLARK
DIRECTOR, WSR-88D RADAR OPERATIONS CENTER
SUBJECT: CHANGE TO NEXRAD LEVEL III PRODUCT DISSEMINATION ON OR
ABOUT MARCH 23, 2026
WSR-88D BUILD 24.1 INCLUDES THE ADDITION OF A SUPPLEMENTAL LOW
ELEVATION ANGLE AT ONE ADDITIONAL SITE, BOSTON MA (KBOX).
THEREFORE, THE FOLLOWING CHANGE TO LEVEL III PRODUCT
DISSEMINATION WILL OCCUR WHEN BUILD 24.1 IS DEPLOYED ON OR ABOUT
MARCH 23, 2026.
TABLE 1 CONTAINS THE WMO HEADINGS AND PRODUCTS THAT WILL BE
DISSEMINATED WHEN THE BOSTON WSR-88D RADAR SCANS ELEVATION
ANGLES BELOW 0.5 DEGREES.
TABLE 1: RADAR PRODUCT WMO HEADINGS AND RPCCDS DIRECTORY NAMES
WMO HEADINGPRODUCT DESCRIPTION RPCCDS FTP
TTAAII NNNAND ELEVATION DIRECTORY
SDUS6I NZQBASE REFLECTIVITY
0.54NM X 1DEG 94/DR 0.3-0.4DEG DS.P94RZ
SDUS5I NZBBASE REFLECTIVITY
0.13NM X 0.5DEG 153/SDR 0.3-0.4DEGN/A
SDUS6I NZUBASE VELOCITY
0.13NM X 1DEG 99/DV 0.3-0.4DEG DS.P99VZ
SDUS5I NZGBASE VELOCITY
0.13NM X 0.5DEG 154/SDV 0.3-0.4DEGN/A
SDUS6I NZFPOWER REMOVED CONTROL 113/PRC
0.3-0.4DEG DS.113FZ
SDUS8I NZXDIFFERENTIAL REFLECTIVITY 159/DZD
0.3-0.4DEG DS.159XZ
SDUS8I NZCCORRELATION COEFFICIENT 161/DCC
0.3-0.4DEG DS.161CZ
SDUS8I NZKSPECIFIC DIFFERENTIAL PHASE 163/DKD
0.3-0.4DEG DS.163KZ
SDUS8I NZHHYDROMETEOR CLASSIFICATION 165/DHC
0.3-0.4DEG DS.165HZ
SDUS8I NZMMELTING LAYER 166/ML
0.3-0.4DEG DS.166MZ
NOTE: THE ABBREVIATION DEG IS USED TO DENOTE DEGREES ELEVATION
ANGLE, WHILE DEG DENOTES DEGREES AZIMUTH ANGLE RESOLUTION.
THESE PRODUCTS WILL BE AVAILABLE VIA NOAAPORT AND THE RPCCDS FTP
SITE HTTPS://TGFTP.NWS.NOAA.GOV/SL.US008001/DF.OF/DC.RADAR/ AT
THE INDICATED DIRECTORY NAMES.EXCEPTIONS ARE THAT SUPER-RES
REFLECTIVITY AND VELOCITY PRODUCTS (153/SDR, 154/SDV) ARE ONLY
DISSEMINATED ON NOAAPORT AND SDUS6I PRODUCTS ARE ONLY
DISSEMINATED ON RPCCDS.
TABLE 2 CONTAINS THE LOWER ELEVATION WSR-88D SITE ADDED WITH
BUILD 24.1, WMO HEADINGS INDICATING THE ORIGINATING AREA (I) AND
SITE (CCCC), THE ELEVATION ANGLE AND MIDDLE CHARACTER OF THE NNN
AWIPS ID GROUP, AND THE YEAR THAT THE LOWER ELEVATION ANGLE SCAN
WILL BEGIN.
TABLE 2: AWIPS AND RADAR SITE WMO HEADINGS OF LOWER ELEVATIONS
WMO HEADING AWIPS ID SITE LOCATION ELEVATION BEGIN
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